There are severe constraints on the supply side of the provision of infrastructure in Asia. The infrastructure financing gap between what is invested in Asia-Pacific (around US$48 billion) and what is needed (US$228 billion) is around US$180 billion every year.
Placed in the centre of a garden bed, they can be underplanted with low growing shrubs and bulbous plants for an harmonious effect; or underplanted with grass for a contrasting statement. Alternatively, the tree can be situated at the end of a long garden to draw visitors out into the garden.
Deciduous Trees. Deciduous trees are trees that lose their leaves in winter. High-altitude trees should have leaves that emerge late in the season to avoid frosts. Poplar, Aspen (both are Populus spp.) and birch (Betula spp.) grow quickly are found in high altitudes from Canada to Mexico. Oaks (Quercus spp.) and a few tough maples (Acer spp.) are also common.